package com.zzyq.pc.utils;

import org.springframework.beans.BeansException;
import org.springframework.beans.factory.NoSuchBeanDefinitionException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;

/**
 * 
 * <p>
 * 
 * @Title: SpringContextUtil.java
 * @Description: bean获取
 * @author: Sywd丶吴迪
 * @date: 2017年9月21日 下午4:47:38
 * @version V1.0
 *          <p>
 */
public class SpringContextUtil implements ApplicationContextAware {
    private static ApplicationContext applicationContext;

    // 实现
    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        SpringContextUtil.applicationContext = applicationContext;
    }

    public static ApplicationContext getApplicationContext() {
        return applicationContext;
    }

    public static Object getBean(String name) throws BeansException {
        try {
            return applicationContext.getBean(name);
        } catch (Exception e) {
            throw new RuntimeException("获取的Bean不存在！");
        }
    }

    public static <T> T getBean(String name, Class<T> requiredType) throws BeansException {
        return applicationContext.getBean(name, requiredType);
    }

    public static boolean containsBean(String name) {
        return applicationContext.containsBean(name);
    }

    public static boolean isSingleton(String name) throws NoSuchBeanDefinitionException {
        return applicationContext.isSingleton(name);
    }

    public static Class<? extends Object> getType(String name) throws NoSuchBeanDefinitionException {
        return applicationContext.getType(name);
    }

    public static String[] getAliases(String name) throws NoSuchBeanDefinitionException {
        return applicationContext.getAliases(name);
    }

}